Sample LR87-718-3
NavDat sample number 30124 · ANDESITE
Sample
| Sample ID | LR87-718-3 |
|---|---|
| Rock name | ANDESITE |
| Rock type | VOLCANIC |
| Composition | INTERMEDIATE |
| Material | IGNEOUS |
| Comment | mix lava dome |
Location
| Latitude | 37.9311 |
|---|---|
| Longitude | -106.931 |
| Location | north of Nelson Mountain |
| State / province | COLORADO |
Age
| Age (Ma) | Error | Min | Max | Geologic age | Dated by |
|---|---|---|---|---|---|
| 26.5 | 26.1 | 26.9 |
Analyses
Whole rock
| Item | Value | Std. dev. | Unit | Method |
|---|---|---|---|---|
| SIO2 | 57.45 | WT% | XRF | |
| TIO2 | 1.05 | WT% | XRF | |
| AL2O3 | 17.76 | WT% | XRF | |
| FE2O3 | 7.88 | WT% | XRF | |
| MGO | 1.54 | WT% | XRF | |
| CAO | 5.77 | WT% | XRF | |
| NA2O | 3.75 | WT% | XRF | |
| K2O | 3.26 | WT% | XRF | |
| P2O5 | 0.45 | WT% | XRF | |
| MNO | 0.13 | WT% | XRF | |
| LOI | 0.71 | WT% | XRF | |
| TOTAL | 99.04 | WT% | XRF | |
| ZN | 106 | PPM | XRF | |
| RB | 84 | PPM | XRF | |
| SR | 765 | PPM | XRF | |
| Y | 32.5 | PPM | XRF | |
| ZR | 201 | PPM | XRF | |
| NB | 14 | PPM | XRF | |
| PB | 45 | PPM | XRF | |
| TH | 13.5 | PPM | XRF | |
| BA | 1171 | PPM | XRF | |
| LA | 47 | PPM | XRF | |
| CE | 91 | PPM | XRF | |
| ND | 38 | PPM | XRF |